A sheet manufacturing apparatus includes an impeller mill defibrating, in a dry process, a raw material containing a fiber, a mixer mixing a defibrated material and a resin, using an air stream to produce a mixture of the defibrated material and the resin, a sieve having an opening through which the mixture passes, a belt, a heater, and a nozzle. The mixture is accumulated on an upper side of the belt to form a web. The heater heats the web to form a sheet so that the fiber is bonded by the resin. The nozzle is arranged between the belt and the heater and applies a liquid to a partial portion of the web so that bonding between the fiber and the resin in a first portion of the sheet is weaker than bonding between the fiber and the resin in a second portion of the sheet.